Apparatus for supporting and manipulating power drills



May 19, 1925. 1,538,142

. M. P. s'rRE-rAusKY V yAPPARTUS FOR SUPPORTING AND MANIPULATING POWER DHILLS Filed Aug. 14, 1924 2 sheets-sheer 1 gwvenkoz @mezzi-5mm@ May 19, 1925.

M. P. STRETAUSKY APPARATUS. FOR SUPPORTING AND MANIPULATING POWER DRILLS l 2 Sheets-Sheet 2 Filed Aug. 14, 1924 Patented May 19, 1925.

MICHAEL P. STRETAUSKY, OF WILKES-BARRE, PENNSYLVANIA.

APPARATUS FOR SUPPORTING AND MANIPULATING POWER DRILLS.

Application filed August 14, 1924. Serial No. 732,106.

T o all whom t may concern:

Be it known that I, MICHAEL P. STRE- TAUSKY, citizen of the United States, residing at Buttonwood Heights, Wilkes- Barre, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Supporting and Manipulating Power Drills; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in apparatus for supporting and manipulating power drills of the type commonly employed in mining operations and has for its object to provide an apparatus on which the power drill may be supported and manipulated by one operator.

The present invention is an improvement on my prior Patent No. 1498492, patented I une 17, 1924, it being the object of the present invention to provide an apparatus which will enable the power drill to be readily manipulated and controlled by a singlel operator.

The various features of novelty and invention will appear from the detailed descrip.- tion taken in connection with the accompanying two sheets of drawings forming a part of this specication.

In the drawings Fig. 1 is a side view of the improved apparatus as set up in a mine. Fig. 2 is a plan view of the same taken on line 2--2 of IFig. v1. Fig. 3 is a plan View of theA apparatus, parts being' broken away to more fully show certain features of the construction. Fig. 4 is a bottom plan view of a portion of the apparatus showing the windlass secured thereto. Fig. 5 is av section taken Online 5 5 of Fig. 3. Fig. 6 is a section taken on a line 6--6 of Fig. 3.

Referring to the drawings, number 1 indicates a pneumatic power drill of any approved construction and which is adapted to be supported on my improved apparatus, the drilling stem of same being indicated by number 2, and the air hose leading to the same indicated at` 3. The power drill is supported on a table 4, which at one end is provided with a metallic point 5 adapted to be inserted into the face of the rock or coal or other material which is to be operated on. The other end ofthe table is supported on a cross bar 5 which is supported at its ends in hangers G, adjustably mounted on mine jacks 7, openings 8 being provided in the mine jacks to permit vertical adjustment of the said hangers. In order to prevent lateral displacement of the cross bar 5, pins 8 may be provided on said cross bar between the mine jacks as clearly illustrated in Fig. 2.

Means are provided for bodily shifting the power drill longitudinally of the supporting table 4 by means comprising a windlass 9 suitably secured beneath the table, intermediate the ends thereof as by brackets 10, secured to the table in any suitable manner.

At the forward end of the table is provided pulley 11, having its upper portion projecting through a slot 12 in the table, said pulley being supported in suitable brackets 13.

A cable 14 is secured in any suitable manner to the body of the power drill, as by means of a clamp 15 and is rove around the pulley 11 and aflixed to the windlass 9. It will now be seen that as the windlass is turned in the proper directionl the power drill will be moved toward that end of the table having the Vpointed end 5. It will further be seen that a single operator can very readily control not only the bodily shifting of the power drill, but also the valve on said drill, said valve .being generally indicated by a numeral 16. The cross bar 5 is provided with a plurality of vertical holes 2O to permit the adjacent end of table 4 to be laterally adjusted thereon, said table .being provided with a downwardly extending pin 21 for insertion into one of said holes.

The table 4 is so mounted and constructed asto be laterally swingable on the said pin 21 to permit the desired range of adjustment of the table `within the shaft.

The table 4 is so constructed as to be eX- tensible. For this purpose there is provided below the table a plate 22, held in place beneath said table by means including a board or plate 23 spaced from the table 4and having a longitudinally extending slot 24 through which projects the pin 21, heretofore referred to as being the pin upon which the table is swingably supported on the cross bar 5, saidpin 21 being secured to and projecting from the said plate 22, as clearly indicated in Figure 6. The spacer plate 23 is maintained in spaced relation with respectto table 4 by any suitable means such as spacer blocks 25 and 26 arranged at the sides of table 4 and said plate 23, as clearly shown in Figure 1. It will now be seen that the distance between the point 5 of the table 4 and the cross bar 5 is capable of adjustment by means of the slidable plate 22 supported beneath the said table member 4, it being understood that the said pin 21 is movable along the slot 24 in the spacer member 23. Improved means are provided for eecting relative adjustment between the table and the slidable member 22 by means including a lever bar 27 which is pivoted midway its ends as at 28 to an extension 29 on the slidable plate 22. The sides of the table member 4 are each provided with a row of openingsl 30 adapted to removably receive pins 3l. A shifting of the slidable plate 22 is .effected by the above described means in .the following manner: Assuming that the plate 22 is to be shifted to the right as viewed in Figure 3, a pin 3l will be placed behind the said lever 27 in one of said openings 30, and the other end of the lever adj acent the other side of the table grasped by the operator and pulled in a direction toward the pin 2l, which passes through the cross bar 5. This willY cause the lever 27 to fulcrum on the. said pin 31, and as the lever is turned on said fulcrum, the plate 22 will be shifted toward the adj acentend of the table.

If this adjustment is sufficient the lever cany be anchored by a second pin 3l placed behind the same to prevent the lever from turningr inthe opposite direction. A step by step adjustment or shifting of the` plate 22 with respect to the table proper can be effected by this adjusting means as will now, no doubt, be readily appreciated, by first causing the lever to be fulcrumed on ay pin behind the same, first on one side of the table and then on: the other, the. pins being shifted from hole to hole as may be necessary. It will beunderstood that thek lever extends between the table member 4 and the spacer plate 23, as clearly` shown in Figure 5; the spacer blocks being far enoughk apart to permit a censiderahle range of adjustability.

The power drill. is preferably supported on the.. table in such a manner that it will not be readily displaced therefrom. For this purpose there may be. provided at each side-of the` table member. 4, angle irons 32, which are secured to the table in any suitable,A manner as by means .of screws or other suitable retaining means generally indicated by, numeral 3,8.

"Ivhe height of the upright web of said angle irons is sufficient to provideguides betwn which thedrill may slide. If desired, the tablev can-be made only asuflicientwidth to, properly receive the power; drill between the upright webs of said angle irons. I have shown the table as being somewhat wider than is necessary to receive the power drill between such angle irons, and have shown the power drill as confined in place between the upright web of said angle irons by means of .transversely extending guiding members 33, said guiding members having an arcuate portion extending over the top of the machine.

In order to prevent the holes 30 from becoming unduly large through wear caused by the insertion of the pins 31, there may be provided strap irons 34 below the spacer plate 23 at the sides thereof, it being Linderstood that the said holes 30 will pass through said strap irons. The horizontal web of the angle irons 32 on top of the table is perforated to coincide with the opening 30 and therefore constitute means for preventing the said holes 30 from becoming unduly enlarged.

It will now be seen that I have provided anapparatus which will permit the power drill to be readily shifted toward the work by means of the windlass secured beneath the table, and that by having` the said windlass mounted on the table, a single operator can readily control the said power drill or machine.

It will also be seen thatA I have provided an apparatus which can be adjusted as to length and' that the adjustment means is comparatively simple and not liable to derangement.

It will be further noted that the power drill is effectually guided lengthwise of said table by very simple mechanism.

, While the invention has been described with considerable particularity of detail, it will be understood that various changes can be made in the apparatus without departing from the spirit of the invention as define in the appended claims.

What I claim is:

l. The combination of means for supportingan air drill including a table on which the drill is adapted to be supported, said table having at one end a member adapted to be shifted longitudinally thereof, and means for shifting said member, comprising a lever .pivoted thereto and extending transversely of the table.

2.` Thel combination of means for supporting an air drill comprising atable, a cross bar on which one end of said table-is detachably connected, a means for adjusting said table with'respect t0 said. cross bars comprising a plate slidably connected to the table and a lever pivoted intermediate its ends to said plate and extending transversely thereof and beyond thesides of the table, said sides being provided with openings which are adaptedto receive abutment members against which Said lever may fulcrum.

3V. In combination, a` table, pointed means at one end of said ,table adapted for insertion into a wall for supportingk said endk of table, aV cross bar on which the other end ofthe table is adapted to be supported,

means for varying the distance between the pointed end of said table and the cross bar comprising a plate slidably supported on said table, said plate having means for anchoring the table to said cross bar and means for effecting a shifting movement between said plate and table.

4. In combination, a table on which a power drill is adapted to be supported, a shiftable plate secured beneath said table at one end thereof, a plate spaced from the table for confining said shiftable plate in position, a lever pivoted between its ends to said shiftable plate and extending beyond the sides of the table, said table having a row of openings at each side and removable pins adapted to be inserted in said openings to form abutment members against which said lever may fulcrum, said pins also serving to prevent shifting of said plate with respect to the table.

5. In combination, a table, a plate spaced from one end of said table, and having a slot extending longitudinally thereof, a shiftable plate positioned between the table and said plate, said shiftable plate having a pin extending through said slot adapted for anchorage with a table supporting member and means for shifting said shiftable plate longitudinally of the table.

6. In combination, a table on which a power drill is adapted to be supported, an upright guide extending longitudinally along each side of the table for guiding and confining a power drill supported on the table, a ywindlass supported below said table intermediate the ends thereof, a pulley at one end of said table having a portion thereof extending through an opening in said table, and a cable secured to said power drill and passed around said pulley and secured to said windlass.

In testimony whereof I aiiix my si nature.

MICHAEL'P. sTRETAU KY. 

